Fix AttributeError: 'Provider' object has no attribute 'encode'
Fix AttributeError: 'Provider' object has no attribute 'encode'

2.32.0 introduces this error - several updates to encode
self._provider.secret_key, but one too many that attempt to encode
self._provider itself.

disruptek/boto,kouk/boto,vijaylbais/boto,zzzirk/boto,yangchaogit/boto,zachmullen/boto,alex/boto,ocadotechnology/boto,rosmo/boto,weka-io/boto,campenberger/boto,garnaat/boto,elainexmas/boto,weebygames/boto,SaranyaKarthikeyan/boto,ekalosak/boto,khagler/boto,appneta/boto,alfredodeza/boto,shaunbrady/boto,appneta/boto,shipci/boto,Pretio/boto,tpodowd/boto,israelbenatar/boto,revmischa/boto,drbild/boto,kouk/boto,awatts/boto,rayluo/boto,bryx-inc/boto,jindongh/boto,abridgett/boto,TiVoMaker/boto,serviceagility/boto,darjus-amzn/boto,disruptek/boto,janslow/boto,clouddocx/boto,dimdung/boto,ryansb/boto,trademob/boto,Asana/boto,jotes/boto,lra/boto,felix-d/boto,bleib1dj/boto,varunarya10/boto,j-carl/boto,vishnugonela/boto,stevenbrichards/boto,drbild/boto,acourtney2015/boto,nikhilraog/boto,ramitsurana/boto,podhmo/boto,alex/boto,s0enke/boto,pfhayes/boto,ddzialak/boto,nishigori/boto,nexusz99/boto,tpodowd/boto